Protein kinase C regulates ionic conductance in hippocampal pyramidal neurons; Electrophysiological effects of phorbol esters

The vertebrate central nervous system contains very high concentrations of protein kinase C, a calcium-and phospholipid-stimulated phosphorylating enzyme. Phorbol esters, compounds with inflammatory and tumor-promoting properties, bind to and activate this enzyme. To clarify the role of protein kina...

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Veröffentlicht in:Proc. Natl. Acad. Sci. U.S.A.; (United States) 1985-04, Vol.82 (8), p.2538-2542
Hauptverfasser: Baraban, J.M, Snyder, S.H, Alger, B.E
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creator Baraban, J.M
Snyder, S.H
Alger, B.E
description The vertebrate central nervous system contains very high concentrations of protein kinase C, a calcium-and phospholipid-stimulated phosphorylating enzyme. Phorbol esters, compounds with inflammatory and tumor-promoting properties, bind to and activate this enzyme. To clarify the role of protein kinase C in neuronal function, we have localized phorbol ester receptors in the rat hippocampus by autoradiography and examined the electrophysiological effects of phorbol esters on hippocampal pyramidal neurons in vitro. Phorbol esters blocked a calcium-dependent potassium conductance. In addition, phorbol esters blocked the late hyperpolarization elicited by synaptic stimulation even though other synaptic potentials were not affected. The potencies of several phorbol esters in exerting these actions paralleled their affinities for protein kinase C, suggesting that protein kinase C regulates membrane ionic conductance.
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Natl. Acad. Sci. U.S.A.; (United States)</title><addtitle>Proc Natl Acad Sci U S A</addtitle><description>The vertebrate central nervous system contains very high concentrations of protein kinase C, a calcium-and phospholipid-stimulated phosphorylating enzyme. Phorbol esters, compounds with inflammatory and tumor-promoting properties, bind to and activate this enzyme. To clarify the role of protein kinase C in neuronal function, we have localized phorbol ester receptors in the rat hippocampus by autoradiography and examined the electrophysiological effects of phorbol esters on hippocampal pyramidal neurons in vitro. Phorbol esters blocked a calcium-dependent potassium conductance. In addition, phorbol esters blocked the late hyperpolarization elicited by synaptic stimulation even though other synaptic potentials were not affected. 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Psychology</topic><topic>Hippocampus</topic><topic>Hippocampus - drug effects</topic><topic>Hippocampus - physiology</topic><topic>In Vitro Techniques</topic><topic>IONIC CONDUCTIVITY</topic><topic>LABELLED COMPOUNDS</topic><topic>Male</topic><topic>membrane conductance</topic><topic>Membrane potential</topic><topic>Molecular and cellular biology</topic><topic>NERVE CELLS</topic><topic>NERVOUS SYSTEM</topic><topic>Neurons</topic><topic>Neurons - physiology</topic><topic>Neurotransmission</topic><topic>NUTRICION</topic><topic>NUTRITION</topic><topic>ORGANIC COMPOUNDS</topic><topic>ORGANS</topic><topic>PHORBOL ESTERS</topic><topic>Phorbol Esters - pharmacology</topic><topic>Phorbols</topic><topic>Phorbols - pharmacology</topic><topic>PHOSPHORUS-GROUP TRANSFERASES</topic><topic>PHOSPHOTRANSFERASES</topic><topic>PHYSICAL PROPERTIES</topic><topic>PHYSIOLOGIE</topic><topic>PHYSIOLOGY</topic><topic>POTASIO</topic><topic>POTASSIUM</topic><topic>Protein Kinase C</topic><topic>Protein Kinases - physiology</topic><topic>RADIOLOGY AND NUCLEAR MEDICINE</topic><topic>RAT</topic><topic>RATA</topic><topic>RATS</topic><topic>Rats, Inbred Strains</topic><topic>RECEPTORS</topic><topic>Receptors, Drug</topic><topic>Receptors, Immunologic - physiology</topic><topic>SOMATIC CELLS</topic><topic>TRANSFERASAS</topic><topic>TRANSFERASE</topic><topic>TRANSFERASES</topic><topic>TRITIUM COMPOUNDS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baraban, J.M</creatorcontrib><creatorcontrib>Snyder, S.H</creatorcontrib><creatorcontrib>Alger, B.E</creatorcontrib><creatorcontrib>Johns Hopkins Univ., Baltimore, MD</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biochemistry Abstracts 1</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>OSTI.GOV</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Proc. Natl. Acad. Sci. U.S.A.; (United States)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baraban, J.M</au><au>Snyder, S.H</au><au>Alger, B.E</au><aucorp>Johns Hopkins Univ., Baltimore, MD</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Protein kinase C regulates ionic conductance in hippocampal pyramidal neurons; Electrophysiological effects of phorbol esters</atitle><jtitle>Proc. Natl. Acad. Sci. U.S.A.; (United States)</jtitle><addtitle>Proc Natl Acad Sci U S A</addtitle><date>1985-04-01</date><risdate>1985</risdate><volume>82</volume><issue>8</issue><spage>2538</spage><epage>2542</epage><pages>2538-2542</pages><issn>0027-8424</issn><eissn>1091-6490</eissn><coden>PNASA6</coden><abstract>The vertebrate central nervous system contains very high concentrations of protein kinase C, a calcium-and phospholipid-stimulated phosphorylating enzyme. Phorbol esters, compounds with inflammatory and tumor-promoting properties, bind to and activate this enzyme. To clarify the role of protein kinase C in neuronal function, we have localized phorbol ester receptors in the rat hippocampus by autoradiography and examined the electrophysiological effects of phorbol esters on hippocampal pyramidal neurons in vitro. Phorbol esters blocked a calcium-dependent potassium conductance. In addition, phorbol esters blocked the late hyperpolarization elicited by synaptic stimulation even though other synaptic potentials were not affected. The potencies of several phorbol esters in exerting these actions paralleled their affinities for protein kinase C, suggesting that protein kinase C regulates membrane ionic conductance.</abstract><cop>Washington, DC</cop><pub>National Academy of Sciences of the United States of America</pub><pmid>3157991</pmid><doi>10.1073/pnas.82.8.2538</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record>
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source Jstor Complete Legacy; MEDLINE; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry
subjects 550601 - Medicine- Unsealed Radionuclides in Diagnostics
551001 - Physiological Systems- Tracer Techniques
Action potentials
ANIMAL CELLS
Animals
AUTORADIOGRAPHY
BASIC BIOLOGICAL SCIENCES
Biological and medical sciences
BIOLOGICAL EFFECTS
BODY
BRAIN
Caenorhabditis elegans Proteins
Calcium
CARCINOGENS
Carrier Proteins
Cell physiology
CENTRAL NERVOUS SYSTEM
CEREBRO
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
Electrophysiology
ENCEPHALE
ENZYMES
ESTERS
FISIOLOGIA
Fundamental and applied biological sciences. Psychology
Hippocampus
Hippocampus - drug effects
Hippocampus - physiology
In Vitro Techniques
IONIC CONDUCTIVITY
LABELLED COMPOUNDS
Male
membrane conductance
Membrane potential
Molecular and cellular biology
NERVE CELLS
NERVOUS SYSTEM
Neurons
Neurons - physiology
Neurotransmission
NUTRICION
NUTRITION
ORGANIC COMPOUNDS
ORGANS
PHORBOL ESTERS
Phorbol Esters - pharmacology
Phorbols
Phorbols - pharmacology
PHOSPHORUS-GROUP TRANSFERASES
PHOSPHOTRANSFERASES
PHYSICAL PROPERTIES
PHYSIOLOGIE
PHYSIOLOGY
POTASIO
POTASSIUM
Protein Kinase C
Protein Kinases - physiology
RADIOLOGY AND NUCLEAR MEDICINE
RAT
RATA
RATS
Rats, Inbred Strains
RECEPTORS
Receptors, Drug
Receptors, Immunologic - physiology
SOMATIC CELLS
TRANSFERASAS
TRANSFERASE
TRANSFERASES
TRITIUM COMPOUNDS
title Protein kinase C regulates ionic conductance in hippocampal pyramidal neurons; Electrophysiological effects of phorbol esters
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